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【单选题】
异步串行通信的主要特点是:A.
通信双方不需要同步
B.
传送的每个字符是独立发送的
C.
字符之间的间隔时间相同
D.
传送的数据中不包括控制信息
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反馈参考答案：
举一反三
【单选题】It is ______________ that the train has been delayed for almost twenty minutes.
A.
awesome
B.
annoying
C.
wonderful
D.
fantastic
【单选题】Choose the correct order to make the following sentences into a voicemail message from Susan Hill. A. I'm supposed to be meeting him at 11 o'clock. B. The thing is, my train was delayed. C. This is Su...
A.
CEBAFDG
B.
CEAFDBG
C.
CEDBFAG
D.
CEABFDG
【简答题】It is ______________ that the train has been delayed for almost twenty minutes.
【简答题】The train is seriously delayed ______________ the heavy snow.
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